you may want to have a better data or wifi connection.
–
thavanDec 6 '12 at 11:23

As suggested by Compro01 in the Answers you could try using ODIN to upgrade your device. Instructions for the GT-I9300 (Which it appears you have) can be found here: androidauthority.com/…
–
ZnewmaNDec 6 '12 at 14:27

1 Answer
1

A third option would be to obtain an image of the appropriate firmware (e.g. from samfirmware) and flash it via ODIN, though this is slightly more involved.

As an addendum, I was getting this myself with my own GS3 on Virgin mobile Canada (aka Bell Canada) and I ended up waiting just about 2 days, from the initial reports of people upgrading on Sunday until I got it late Tuesday evening.